According to analysis and design of logic flow, the Therbligs of computer assembling are divided into position seeking, object selection, object rotation, object assembly, pressing, object loosening, fastening and inspection etc. Respective multimedia program language is used to build corresponding system function, so as to train the operators on production line to master standard operation procedures. Learners can correctly operate the procedures of hardware assembling and pay attention to installation key points, avoiding the irreversible damage as learners go directly into real machine operation before knowing well or without paying attention to the key procedures, in which case even mainboard have to be replaced by a new one. This study changes the traditional evaluation method of learning performance. Apart from multiple-choice question and true false question, it develops the learning and operation testing system of simulated training and puts forward a logic learning script method. The concept of Therbligs is adopted to analyze the procedures of computer hardware assembling.